戴维·乔纳森是一位当代教育技术研究领域的领军人物，德艺双馨。在其近40年的学术生涯中，他在探讨建构主义学习环境、意义学习分类学、问题解决能力培养、教学任务分析、思维工具与认知工具开发等方面出类拔萃，贡献卓著。作为一位深受学生爱戴的教师和同行尊敬的专家，乔纳森对教育技术学发展的影响弥久深远。%David H.Jonassen established himself as the "go to" scholar in the field of educational technology,well known with morality and talent.During his academic career in nearly 40 years,Professor Jonassen was a significant contributor in several areas related to constructivist learning environment,taxonomy of meaningful learning,the training of problem-solving capacity,the analysis of instructional task and the development of mind-tools and the cognitive tools,etc.As an exemplary expert notably respected by the students and colleagues,Jonassen made great impacts on the development of educational technology,which remained and became even firmer as time goes by.
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